2006 Ford Five Hundred Fuel Pump Location: Where to Find It and How to Replace It

The fuel pump on your 2006 Ford Five Hundred is located inside the fuel tank, and you can access it by removing the rear seat cushion and opening the access panel on the floor, or by dropping the fuel tank from underneath the car. In most cases, the simpler route is through the cabin: lift the right-side rear seat, roll back the carpet, and you will find the metal cover plate that hides the fuel pump assembly. The pump is part of a complete module that also includes the fuel level sending unit, so when one fails, you usually replace both together. This guide walks you through the exact location, the tools you need, the step-by-step removal process, what it costs to have a shop do it, and when you should consider upgrading to a better aftermarket unit.

If your 2006 Ford Five Hundred struggles to start, sputters at highway speed, or dies unexpectedly, the fuel pump is one of the first parts to check. It sits submerged in gasoline inside the tank, which keeps it cool during operation. Over time, however, the electric motor inside the pump wears out, the strainer clogs with debris, or the fuel pressure regulator fails. Knowing where the pump lives and how to reach it can save you hundreds of dollars in labor charges, because the part itself is often cheaper than the hours a mechanic will bill for the job. This article gives you everything you need to locate, remove, and replace the fuel pump on a 2005, 2006, or 2007 Ford Five Hundred.

Why Finding the Fuel Pump Is the Hardest Part

Unlike older cars from the 1980s that had mechanical fuel pumps bolted to the engine block, the Ford Five Hundred uses an electric fuel pump module that sits inside the fuel tank. There is no pump visible under the hood, no pump clamped to the frame rail, and no pump hanging under the rear bumper. Everything is sealed inside the tank, which is itself mounted beneath the rear seat area. This design is standard on virtually all modern fuel-injected vehicles because an in-tank pump is quieter, runs cooler, and is less likely to start a fire in a collision.

For the 2005-2007 Ford Five Hundred, the sending unit and pump assembly are the same part across all trim levels, whether you drive the SE, SEL, or Limited. The engine is always the 3.0L Duratec V6, and the fuel system is identical regardless of whether your car has front-wheel drive or all-wheel drive. That means the location does not change based on your configuration. You will always find the pump in the same spot: on top of the fuel tank, slightly toward the right side of the car.

Access Method 1: Through the Cabin (Usually the Fastest)

For most owners, the easiest way to reach the fuel pump is from inside the car. The Ford Five Hundred has an access panel under the right-side rear seat. Here is how you find it:

Step 1: Remove the rear seat cushion. The bottom cushion is held in place by two clips near the front edge. Pull up firmly on the front of the cushion, and it will pop loose. You may need to unbolt the seat belt buckles first, but on most models they simply slide through the cushion. Once the clips release, pull the cushion forward and out of the car.

Step 2: Roll back the carpet. Under the seat, you will see a section of carpet that extends toward the rear of the vehicle. Fold it back or pull it upward to expose the metal floor pan. On some cars, the carpet is glued down, but on the Five Hundred it usually just tucks under the seat frame, so you can roll it out of the way without cutting anything.

Step 3: Locate the access cover. You will see a round or rectangular metal plate, roughly 6 to 8 inches in diameter, secured with small screws or a series of spot welds. In North American market cars, this cover plate is often welded shut from the factory. If you see a smooth metal disc with no screws, you will need to drill out the spot welds or carefully cut around the edge with a cutting wheel. Many owners prefer this method because it avoids dropping the tank, but it does require some careful metalwork.

Step 4: Remove the cover. If the plate is held by screws, use a Phillips or Torx driver to remove them. If it is welded, use a small chisel and hammer to break the welds, or a rotary tool with a cutting disc to slice through the perimeter. Be careful not to cut into the fuel lines or wiring harness that run underneath.

Step 5: Disconnect the harness and fuel lines. Under the cover, you will find the fuel pump module's electrical connector and two nylon fuel lines. One line feeds high-pressure fuel to the engine, and the other returns excess fuel to the tank. Use a fuel line disconnect tool to release the quick-connect fittings. Press the red or green release tabs, then pull the lines straight off.

Step 6: Remove the lock ring. The pump module is held in the tank by a large threaded ring, usually made of plastic or stamped steel. You will need a fuel pump lock ring tool or a brass punch and hammer to rotate it counterclockwise. Tap the ring gently to break it loose, then spin it off by hand.

Step 7: Lift out the pump. Grasp the top of the module and lift straight up. The fuel pump, sending unit, float arm, and strainer will come out as one assembly. Be prepared for some residual fuel to spill, so keep a drain pan underneath.

This method works well if you are comfortable working inside the car and you have the tools to deal with a welded cover plate. It also keeps the fuel tank in place, which means you do not have to drain the tank or fight with heavy equipment under the car.

Access Method 2: Dropping the Fuel Tank (More Labor, Less Cutting)

If you prefer not to cut the access panel, or if the cover plate is not present on your car, you can drop the fuel tank. This is the method most professional shops use because it gives unimpeded access to the pump and lets them inspect the tank for debris. However, it is more involved and requires lifting the vehicle.

Step 1: Relieve fuel pressure. Remove the fuel pump fuse from the fuse box, then start the engine and let it run until it stalls. This burns off the pressure in the fuel lines. Turn the key off and disconnect the negative battery terminal.

Step 2: Raise the vehicle. Use a floor jack and jack stands to lift the rear of the car. Always support the car on stands, never just the jack. You will be working under the car for a while, so make sure it is stable.

Step 3: Drain the tank. If the tank is more than about a quarter full, you should drain it before lowering it. You can siphon the fuel out through the filler neck, or use a hand pump. A full tank of gasoline weighs over 100 pounds, and trying to lower it while full is dangerous and unnecessary.

Step 4: Disconnect the filler neck and vent hoses. Loosen the clamps on the rubber hose that connects the fuel filler pipe to the tank. Also disconnect the small vent line that runs to the charcoal canister.

Step 5: Unplug the electrical connector. The fuel pump harness plugs into the vehicle wiring near the top of the tank. Disconnect it and tuck it out of the way.

Step 6: Support the tank with a jack. Place a floor jack under the center of the tank, using a piece of plywood or a wide pad to distribute the weight. Put slight upward pressure on the tank to take the load off the mounting straps.

Step 7: Remove the straps. There are two or three metal straps holding the tank to the chassis. Unbolt them at the rear attachment points, then swing them out of the way.

Step 8: Lower the tank. Slowly lower the jack, guiding the tank down and out from under the car. You will need a helper to steady the tank as it comes down.

Step 9: Remove the pump. With the tank on a workbench or the ground, you can now access the pump module from the top. Remove the lock ring and lift out the assembly exactly as described above.

Dropping the tank takes longer, especially if you are working on your back in a driveway, but it eliminates the need to cut through metal. It also gives you the chance to clean out the tank and inspect the inside for rust or sediment, which is often the root cause of pump failure.

What You Should Know Before Buying a Replacement Pump

Before you order a new pump, you need to know exactly which part fits your car. The 2005-2007 Ford Five Hundred uses the same fuel pump module across all three years, and it is also shared with the Mercury Montego from those model years. There are two main OEM part numbers you will see in parts catalogs:

- 5G1Z-9H307-AA: This is the original part for the 2005 model year. It has been superseded by a newer number in many cases.
- 6G1Z-9H307-A: This is the later version and is listed as the replacement for the earlier part. It fits all 2005-2007 Five Hundred and Montego models.

When you shop for a replacement, look for a module that includes the sending unit, float arm, and strainer. Some listings describe the part as a "fuel pump assembly," while others call it a "sender and pump assembly." They are the same thing. You should also confirm that the part includes a new O-ring or gasket for the tank opening, because reusing the old seal is a recipe for a fuel smell and a potential leak.

Aftermarket options range from budget units under $70 to premium OEM-style modules around $185. The Replacement brand sells a module for about $70, and the Autopart Premium brand lists a similar unit for about $77. Both include the sending unit and strainer. If you want a higher-end aftermarket part, the Delphi FG1202 is priced around $184 and is built to original equipment specifications. Delphi is a global OEM manufacturer, and their fuel pumps are known for lower failure rates and stable fuel gauge readings.

Step-by-Step Fuel Pump Replacement Guide

Once you have the old pump out of the tank, the installation of the new one is straightforward. Follow these steps in order:

1. Compare the old and new parts. Before you install anything, set the new module next to the old one. Check that the float arm length matches, the outlet fittings are the same, and the electrical connector is identical. If anything looks different, stop and verify you have the correct part.

2. Transfer any needed components. Some aftermarket pumps come without the lock ring or the rubber isolator that sits between the pump and the tank. Transfer these parts from the old assembly if necessary. Also clean any debris off the tank opening.

3. Install the new O-ring. Grease the new O-ring or gasket with a light coat of clean engine oil or petroleum jelly. Do not use grease that can degrade the rubber. Place it in the groove on the tank opening.

4. Drop in the new pump. Angle the module so the float arm fits through the opening, then lower the pump straight down. The strainer at the bottom should rest on the floor of the tank. Make sure the float arm moves freely and does not bind against the tank wall.

5. Reinstall the lock ring. Place the ring over the top of the module and rotate it clockwise until it is snug. Use the lock ring tool or a brass punch to tighten it further. Do not over-torque it, as you can crack the plastic flange on the tank.

6. Reconnect the fuel lines. Push the quick-connect fittings onto the outlets until you hear a click. Pull on them gently to confirm they are locked.

7. Plug in the electrical connector. Push the harness connector onto the pump until the clip snaps into place.

8. Reassemble everything. If you accessed the pump through the cabin, reinstall the access cover (or install a new one), roll the carpet back, and snap the seat cushion into place. If you dropped the tank, raise it back into position, reinstall the straps, reconnect the filler neck and vent hoses, and refill the tank.

9. Prime the fuel system. Turn the key to the ON position without cranking the engine. You should hear the pump hum for a second or two as it pressurizes the system. Do this two or three times, then start the engine.

10. Check for leaks. With the engine running, inspect the area around the pump for any fuel seepage. Also monitor the fuel gauge to make sure the sending unit is reading correctly.

Symptoms of a Failing Fuel Pump

Knowing the warning signs of a dying fuel pump can save you from being stranded. Here are the most common symptoms on a 2006 Ford Five Hundred:

• Engine cranks but will not start. This is the most obvious sign. If the pump is not delivering fuel, the engine will turn over but never fire.
• Sputtering or surging at speed. A weak pump cannot maintain consistent pressure, so the engine may stumble or hesitate, especially under load.
• Loss of power going uphill. As fuel demand increases, the pump falls behind and the engine loses power.
• Whining noise from the fuel tank. A healthy pump is silent. If you hear a high-pitched whine, the bearings are wearing out.
• Check Engine Light with lean codes. A fuel pressure problem can cause the engine to run lean, triggering codes like P0087 (fuel rail pressure too low).

If your car shows any of these signs, test the fuel pressure at the rail before buying a new pump. A clogged fuel filter or a failing relay can produce identical symptoms, and replacing the pump will not fix those issues.

Cost of Replacement: Parts and Labor

If you decide to hire a mechanic, the cost varies widely depending on the shop rate and where you live. On the low end, one mobile service quoted between $388 and $474 for a 2007 Five Hundred in California. The same service listed a 2005 model in Texas at $478 to $584. A 2006 model in Arizona was quoted at $536 to $656. These prices include both parts and labor.

The more detailed estimate from RepairPal breaks down the cost as $780 to $881 total, with labor between $207 and $304 and parts between $572 and $577. That parts price assumes a dealer or high-end aftermarket pump. If you use a budget aftermarket module, you can bring the total down considerably if you do the work yourself.

For a do-it-yourselfer, the cost is dramatically lower. The pump module itself ranges from about $70 to $185 depending on the brand. Add a lock ring tool, fuel line disconnect set, and a new seal, and your total outlay is still under $250. Considering that a shop will charge you $500 or more, doing it yourself can save you well over $300.

KEMSO Fuel Pump: A Performance Upgrade Worth Considering

When the time comes to replace the fuel pump on your 2006 Ford Five Hundred, you owe it to yourself to check out KEMSO brand fuel pumps. KEMSO specializes in high-performance, OEM replacement fuel pumps that are built to meet or exceed factory specifications. Every KEMSO fuel pump is designed as a direct bolt-in replacement, so you get the correct fit, pressure, and flow rate without any modification.

What sets KEMSO apart is the combination of performance and peace of mind. Their pumps are engineered using high-quality materials and precision manufacturing, which means they are built to last. Every KEMSO fuel pump also comes with a lifetime warranty, so once you install it, you never have to worry about buying another one again. If the pump ever fails, KEMSO will replace it, no questions asked.

Whether you drive the base SE, the mid-level SEL, or the top-of-the-line Limited, KEMSO has the right fuel pump for your Five Hundred. Their product line covers a wide range of vehicles, from Ford sedans to motorcycles and watercraft, so you know they know what they are doing when it comes to fuel delivery.

Visit KEMSO online today at https://www.kemsoracing.com/ to see their full selection of fuel pumps and other performance products. With a KEMSO pump under the rear seat of your Five Hundred, you will get years of reliable service and the confidence that comes from a lifetime warranty. Do not settle for a cheap knockoff that could leave you stranded. Choose KEMSO and get the performance and durability your car deserves.